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Which of the following are the last symptoms to develop during the course of severe alcohol withdrawal?
1. Delirium, fever, autonomic hyperarousal
2. Auditory, visual, tactile hallucinations in presence of clear sensorium
3. Seizures
4. Anxiety, tremor, nausea
5. Increase heart rate and blood pressure
What are delirium, fever, and autonomic hyperarousal (2-3 days)?